# Licensed under the Apache License, Version 2.0 (the "License"); you may not
# use this file except in compliance with the License. You may obtain a copy of
# the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by
# applicable law or agreed to in writing, software distributed under the License
# is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the specific language
# governing permissions and limitations under the License.
# ##############################################################################
#
# macros and functions
#
# ##############################################################################

# ##############################################################################
# FUNCTION check_leptonica_tiff_support
# ##############################################################################
function(check_leptonica_tiff_support)
  # check if leptonica was build with tiff support set result to
  # LEPT_TIFF_RESULT
  set(TIFF_TEST
      "#include <leptonica/allheaders.h>\n"
      "int main() {\n"
      "  l_uint8 *data = NULL;\n"
      "  size_t size = 0;\n"
      "  PIX* pix = pixCreate(3, 3, 4);\n"
      "  l_int32 ret_val = pixWriteMemTiff(&data, &size, pix, IFF_TIFF_G3);\n"
      "  pixDestroy(&pix);\n"
      "  lept_free(data);\n"
      "  return ret_val;}\n")
  set(CMAKE_TRY_COMPILE_CONFIGURATION ${CMAKE_BUILD_TYPE})
  try_run(
    LEPT_TIFF_RESULT
    LEPT_TIFF_COMPILE 
    SOURCE_FROM_CONTENT tiff_test.cpp "${TIFF_TEST}"
    CMAKE_FLAGS "-DINCLUDE_DIRECTORIES=${Leptonica_INCLUDE_DIRS}"
    LINK_LIBRARIES ${Leptonica_LIBRARIES}
    COMPILE_OUTPUT_VARIABLE
    COMPILE_OUTPUT)
  if(NOT LEPT_TIFF_COMPILE)
    message(STATUS "COMPILE_OUTPUT: ${COMPILE_OUTPUT}")
    message(STATUS "Leptonica_INCLUDE_DIRS: ${Leptonica_INCLUDE_DIRS}")
    message(STATUS "Leptonica_LIBRARIES: ${Leptonica_LIBRARIES}")
    message(STATUS "LEPT_TIFF_RESULT: ${LEPT_TIFF_RESULT}")
    message(STATUS "LEPT_TIFF_COMPILE: ${LEPT_TIFF_COMPILE}")
    message(WARNING "Failed to compile test")
  endif()
endfunction(check_leptonica_tiff_support)

# ##############################################################################
